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Will CPU/PSU work for GPU?

Last response: in Graphics & Displays
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September 7, 2012 7:37:30 AM

Hey everybody,

So it seems it is time to upgrade my computer and I am currently at around a $400 budget. Right now my specs are

Processor: AMD Athlon(tm) II X4 635 Processor (4 CPUs), ~2.9GHz
Memory: 8192MB RAM
PSU: Azza Alpha 500W Model#PSAZ-500C12 http://azzatek.com/psaz-500c12.html
Motherboard: Asus M4N68T-M-V2 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

So, this is a pretty old build, and I was curious on what I should purchase. I was eyeing either a GTX 480, GTX 660Ti, or r7870. I think the ram is still fine, but is the processor/mobo too old? Will it bottleneck my gpu if I get those 3 cards.

And if I need a new CPU what can I get that won't bottleneck it, is there a site for benchmark results? I'm not sure what to look for.

In addition, I am unsure if my PSU will be able to provide the power for these cards. I noticed the 450w minimum for the 660ti, but for the GTX 480 it is definitely not enough. The PSU is +12v1@17A and +12v1@17A. I am not sure what that means so can somebody please help me decipher it and explain it to me. This card was a temporary PSU that I bought about a year ago after my old one died.

The cards I am currently eyeing are:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

What is the difference between a 3GB 660Ti vs a 2GB 660Ti.


If you need anymore information please feel free to ask. I am hoping to buy it these few days, so if I can get an answer quick it would be greatly appreciated.!

Thank you in advance,

ajCee

EDIT: I am also trying to run dual monitors one 1600x900 and one 1400x900.

More about : cpu psu work gpu

a c 291 U Graphics card
a b à CPUs
September 7, 2012 8:00:28 AM

You'll need a new power supply unit regardless of the card you choose. How does that change your budget? I'd estimate around $60 for the power supply unit.
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September 7, 2012 8:04:11 AM

Sunius said:
You'll need a new power supply unit regardless of the card you choose. How does that change your budget? I'd estimate around $60 for the power supply unit.


Yeah I figured as much, is it possible you can explain why? It is a 500W PSU and min req is 450W, sorry I just recently started looking into the small details.

Well budget will still be the same around $400, I would say. What about a Seasonic 620W,

My friend can sell me this brand new http://www.newegg.com/Product/Product.aspx?Item=N82E168... for $50.
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a c 291 U Graphics card
a b à CPUs
September 7, 2012 8:04:39 AM

It's because it's a very old and bad quality power supply. It probably cannot deliver what it promisses on the label. Also, it doesn't have enough connectors for either card. Check this article:

http://www.tomshardware.com/reviews/low-cost-psu-pc-pow...

That power supply your friend can sell you is excellent. You should definitely get it for that price.
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a c 104 U Graphics card
September 7, 2012 8:05:29 AM

Yeah, go for it. Seasonic is very good.
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September 7, 2012 8:10:24 AM

Alright great figured as much.

So other than the PSU, would the Mobo/CPU work for the GPUs? Would it bottleneck the results?
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a c 291 U Graphics card
a b à CPUs
September 7, 2012 8:30:17 AM

It's might bottleneck slightly, but nothing a small overclock cannot fix :) .
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a c 104 U Graphics card
September 7, 2012 8:42:02 AM

Not sure if this means you should stay away from AMD, quote ;

Pros: Cheap

Cons: Doesn't meet PCI-E 2.0 spec. Doesn't provide enough power to the video card to power a Radeon 6850 (this card works in other machines and my old card, a 8800 GT, works fine in this board).


http://www.newegg.com/Product/Product.aspx?Item=13-131-...
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September 9, 2012 1:02:32 AM

Alright thanks a lot everybody, but just now I found out that the 7950 is the same price as the 660Ti, and from what everyone is saying it seems I will end up getting the 7950, will there be any bottle necking from my CPU to my GPU?

As of right now, I have it Overclocked to 3.12ghz but it is currently running stock cooling. I just bought a new 212+ so once I get that I should be able to overclock it a lot higher no?

I wouldn't have to buy a new cpu/mobo right, the x4 635 should be fine,

and if so, how high do you think I should try to get my cpu overclocked? 3.5?

The 7950 I bought is http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If these actually work and I don't have to buy any new cpu/mobo, then it should be well under my $400 budget. :D 
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a b U Graphics card
a b à CPUs
September 9, 2012 1:05:18 AM

CPU will bottleneck due to no L3. Get a Phenom II x4 965.
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September 9, 2012 1:40:51 AM

obsama1 said:
CPU will bottleneck due to no L3. Get a Phenom II x4 965.


how much performance would it bottleneck?
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a b U Graphics card
a b à CPUs
September 9, 2012 1:42:14 AM

Not a lot, but it's not a tiny bottleneck either. A 7950/660Ti needs a better CPU.
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September 9, 2012 1:50:02 AM

obsama1 said:
Not a lot, but it's not a tiny bottleneck either. A 7950/660Ti needs a better CPU.


alright, but guessing overclocking wouldn't help alot then? or just lessen the bottleneck
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a b U Graphics card
a b à CPUs
September 9, 2012 2:01:11 AM

It would lessen it, but it would still be a bottleneck. You could use it until you feel that it's not enough and you want a different CPU.
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September 9, 2012 2:10:03 AM

obsama1 said:
It would lessen it, but it would still be a bottleneck. You could use it until you feel that it's not enough and you want a different CPU.


Yeah that'll probably be what I do, since it'll still be a huge upgrade from my 4870. Thanks, bottlenecking doesn't harm anything right? :D 
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a b U Graphics card
a b à CPUs
September 9, 2012 2:20:13 AM

Performance goes down. But the Athlon should suffice.
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September 16, 2012 12:24:42 AM

Best answer selected by lordz23.
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